Electronic park pawl motor direct override

A method of using an override system to control an electronic park pawl system of a vehicle, the method comprising:

• providing a portable park pawl override tool configured to control selective engagement and disengagement a park pawl mechanism of the electronic park pawl system under certain vehicle conditions including loss of 12V power and/or loss of vehicle serial communication with at least the electronic park pawl system;
• disengaging a 12V power supply of the vehicle from a wiring harness of the vehicle;
• selectively connecting the portable park pawl override tool to a breakout interface on the vehicle to connect the portable park pawl override tool to the vehicle, wherein the vehicle includes a dedicated, direct communication and power connection between the breakout interface and the electronic park pawl system, the dedicated, direct communication and power connection being independent of and in addition to a connection of the electronic park pawl system with the 12V power supply of the vehicle;
• selectively connecting an auxiliary, off-vehicle 12V power supply to the park pawl override tool;
• and
• operating the park pawl override tool while selectively connected to the breakout interface to provide power and control signal communication to the electronic park pawl system to control the park pawl mechanism to selectively move to a disengaged position and/or to an engaged position while the vehicle is under the condition of loss of 12V power to at least the electronic park pawl system.